The Tiffen 55mm #6 Yellow 1 Filter is a basic contrast filter, primarily for use with black and white film. This yellow filter slightly darkens skies, helps to cut through haze, and improves overall contrast. It is a common contrast filter for black and white photography, producing an accurate tonal range and partially compensating for the blue sensitivity of panchromatic film.
There is a 1.5x filter factor with this filter, requiring an increase of 0.6 stop for normal exposure. Tiffen filters are made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 10,000th of an inch, and then mounting to precision metal rings.
| Type | Yellow |
| Size | 55 mm |
| Grade | #6 |
| Filter Factor | 1.5 (0.6 stop) |
| Rotating | No |
| Effect | Subtly darkens skies, slight increase in overall contrast |
| Application | General black and white photography |
| Construction | ColorCore technology |
| Front Filter Thread Size | 55 mm |
| Front Lens Cap Size | 55 mm |